Hello, and welcome to HCM!
It is unlikely that either of the two pain medications you mentioned would be causing the symptoms he is having. However, this symptom is something that should be investigated by a doctor. You are describing palpitations, which can be caused by a number of problems (including arrythmias, atrial fibrillation
or other forms of supraventricular tachycardia
, aortic stenosis
, heart block, others) A doctor will likely do an EKG to examine the electrical activity in the heart, as well as listen for murmurs, and examine him for signs of heart failure
As far as a "natural" alternative for the pain, it is unlikely that one of these products will control his pain if he is requiring narcotics such as hydrocodone
to keep it under control now.
I wish you good health, and thank you for posting on HCM!